CVE-2020-13991

Name: CVE-2020-13991
Creator: NVD / NIST
Published: 2020-09-24T23:15:13.54+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 2.46%

Last modified Jun 17, 2026

CVE-2020-13991 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. vm/opcodes.c in JerryScript 2.2.0 allows attackers to hijack the flow of control by controlling a register.. EPSS estimates a 2.46% chance of exploitation in the next 30 days.

Description

vm/opcodes.c in JerryScript 2.2.0 allows attackers to hijack the flow of control by controlling a register.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

2.46%

82.4th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Jerryscript	Jerryscript	2.2.0

References

https://github.com/googleprojectzero/fuzzilli#JerryScriptThird Party Advisory
https://github.com/jerryscript-project/jerryscript/issues/3858Exploit, Third Party Advisory
https://github.com/jerryscript-project/jerryscript/issues/3859Exploit, Third Party Advisory
https://github.com/jerryscript-project/jerryscript/issues/3860Exploit, Third Party Advisory
https://github.com/jerryscript-project/jerryscript/pull/3867Exploit, Patch, Third Party Advisory
https://github.com/googleprojectzero/fuzzilli#JerryScriptThird Party Advisory
https://github.com/jerryscript-project/jerryscript/issues/3858Exploit, Third Party Advisory
https://github.com/jerryscript-project/jerryscript/issues/3859Exploit, Third Party Advisory
https://github.com/jerryscript-project/jerryscript/issues/3860Exploit, Third Party Advisory
https://github.com/jerryscript-project/jerryscript/pull/3867Exploit, Patch, Third Party Advisory

Timeline

Published: Sep 24, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-13991?

vm/opcodes.c in JerryScript 2.2.0 allows attackers to hijack the flow of control by controlling a register.

How severe is CVE-2020-13991?

CVE-2020-13991 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.46% probability of exploitation in the next 30 days.

How do I fix CVE-2020-13991?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-13991?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST